Another flat tire this morning, I couldn't see anything wrong with the tube or tire but changed the tube over anyway. I left the old tube pumped up to test it; I'll see what its like when I get home.

Judging by the bumpier ride recently I'm beginning to wonder if my new floor pump is under reading the pressure, ie what I think is 80psi may be 90+. Something else to experiment with when I get home tonight.